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alt="貼片電阻，合金電阻，保險絲產品新聞中心" src="/u_file/2206/photo/2206/2022062314432921.jpeg" width="100%"></a></div>  <div id="nav"> <div class="wrap"> <div id="side"> <a href="/info/category-4/" class="trans "> 公司新聞 </a> <a href="/info/category-5/" class="trans on"> 行業新聞 </a> <a href="/info/category-6/" class="trans "> 產品新聞 </a> <a href="/faq/" class="trans "> 知識解答 </a> </div> </div> </div>  <div id="info-detail"> <div class="wrap"> <div class="top"> <h1 class="title"> 合金電阻基本參數:如何計算合金的電阻率? </h1> <div class="meg"> <div class="firsts">發布時間：2022-03-18</div> <div class="">已被瀏覽：<span>1592</span>次</div> <div class="shape"> <span>分享到：</span> <div class="bdsharebuttonbox" style="display:inline-block;vertical-align:middle;"><a href="#" class="bds_more" data-cmd="more"></a><a href="#" class="bds_qzone" data-cmd="qzone" title="分享到QQ空間"></a><a href="#" class="bds_tsina" data-cmd="tsina" title="分享到新浪微博"></a><a href="#" class="bds_sqq" data-cmd="sqq" title="分享到QQ好友"></a><a href="#" class="bds_weixin" 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和它的直徑d，計算出導線的橫截面積S，并用伏安法測出金屬導線的電阻R，即可計算出金屬導線的電阻率。<br /> 合金電阻基本參數:電阻的參數有哪些？<br /> 電阻器的主要參數有標稱阻值（簡稱阻值）、額定功率和允許偏差:（一）標稱阻值標稱阻值通常是指電阻器上標注的電阻值。電阻值的基本單位是歐姆（簡稱歐）用"Ω"表示。在實際應用中，還常用千歐（kΩ）和兆歐（MΩ）來表示。兆歐（MΩ）、千歐（kΩ）與歐姆（Ω）之間的換算關系是：1MΩ=Ω1kΩ=Ω（二）額定功率額定功率是指電阻器在交流或直流電路中，在特定條件下（在一定大氣壓下和產品標準所規定的溫度下）長期工作時所能承受的最大功率（即最高電壓和最大電流和乘積）。電阻器的額定功率值也有標稱值，一般分為1/8W、1/4W、1/2W、1W、2W、3W、4W、5W、等，其中1/8W和1/4W的電阻器較為常用。（三）允許偏差一只電阻器的實際阻值不可能與標稱阻值絕對相等，兩者之間會存在一定的偏差，我們將該偏差允許范圍稱為電阻器的允許偏差。允許偏差小的電阻器，其阻值精度就越高，穩定性也好，但其生產成本相對較高，價格也貴。通常，普通電阻器的允許偏差為±5%、±10%、±20%，而高精度電阻器的允許偏差則為±1%、±0.5%。</span></span></span> <hr />方案推薦：華德合金電阻 </div> <div id="page" class="wow fadeInUp wrap"> <div class="prev fl">上一篇 : <a href="/info/news-i01792i1.html" title="高功率貼片電容:貼片電容與插件電容有哪些區別">高功率貼片電容:貼片電容與插件電容有哪些區別</a></div> <div class="next fr">下一篇 : <a href="/info/news-i01790i1.html" title="貼片電阻的規格書上±是什么意思呢？">貼片電阻的規格書上±是什么意思呢？</a></div> <div class="clear"></div> </div> <div class="returns"> <a href="/info/category-5/page-6.html" class="returns" title="返回列表"><img 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